RPS0500DH4R70JB Vishay

33 3 RPS 500 www.vishay.com Vishay Sfernice Power Resistor for Mounting onto a Heatsink Thick Film Technology FEATURES Compliant with requirement 26 of NF-EN45545-2 High power rating: 500 W High overload capability up to 2 times rated power (see energy curve) Heatsink mounting Low thermal radiation of the case DESIGN SUPPORT TOOLS AVAILABLE Material categorization: for definitions of compliance please see www.vishay.com/doc 99912 3D Models This range has been developed specifically for electrical traction applications and is capable of dissipating 500 W at +70 C. The remarkable performance characteristics are evident when used in severe pulse conditions. The copper base allows easy mounting on the heatsink and provides optimal dissipation conditions. DIMENSIONS in millimeters RPS 500D 73 RPS 500A 73 56 56 6 10.5 6 10.5 26 1 28 1 57 57 33.5 16.2 18.7 7.2 7.2 35.8 38.1 4.2 4.2 2 x M4 2 x M4 21 21 useful depth: 6 useful depth: 6 Note Tolerances unless stated: 0.2 mm STANDARD ELECTRICAL SPECIFICATIONS RESISTANCE RATED POWER LIMITING ELEMENT TEMPERATURE TOLERANCE MODEL SIZE RANGE P VOLTAGE U COEFFICIENT 25 C L % W V ppm/C (1) RPS 500 500 0.24 to 1M 500 5000 1, 2, 5, 10 150 Note (1) E24 series MECHANICAL SPECIFICATIONS TECHNICAL SPECIFICATIONS Insulated case and resin for Rated Power (P ) Mechanical Protection 70 potting UL 94 V-0 Chassis Mounted at 70 C 500 W continuous load Resistive Element Cermet (Case Temperature) Alumina onto base of nickel Substrate coated copper Thermal Resistance of the R : 0.11 C/W th (j - c) Component End Connections Screws M4 (M5 on request) Weight 250 g 10 % 300 ppm/C < 1 Temperature Coefficient 150 ppm/C > 1 Tightening Torque on 2 Nm Connections L: 7 kV - H: 12 kV RMS RMS Tightening Torque on Heatsink 4 Nm Dielectric Strength MIL STD 202 Method 301: 1 min/10 mA max. ENVIRONMENTAL SPECIFICATIONS 6 > 10 M under U = 500 V ins DC Insulation Resistance Temperature Range -55 C to +125 C IEC 60115-1 IEC 60695-11-5 Inductance 50 nH Flammability 2 applications 30 s separated by 60 s Revision: 05-Jun-2019 Document Number: 50047 1 For technical questions, contact: sferfixedresistors vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc 91000 DD D 60 60 RPS 500 www.vishay.com Vishay Sfernice PERFORMANCE TESTS CONDITIONS REQUIREMENTS EN 60115-1 Momentary Overload 2 Pr / 10 s < (0.25 % + 0.05 ) U = 5000 V L IEC 60115-1 / IEC60068-2-14 Test Na Rapid Temperature Change < (0.25 % + 0.05 ) 5 cycles, -55 C to +125 C IEC 60115-1 Load Life < (0.5 % + 0.05 ) (1) Pr (i.e. 500 W) / 1000 h / 70 C (no cycling) MIL STD 202 Method 103 B and D Humidity (Steady State) < (0.5 % + 0.05 ) 56 days, 95 % RH / 40 C Note (1) Resistors are not tested and guaranteed in cycling conditions RESISTANCE VALUE IN RELATION TO TOLERANCE AND TCR Resistance Values 1 1 Standard Tolerances 5 % Standard TCR (-55 C to +125 C) 300 ppm/C 150 ppm/C Tolerance on Request 1 %, 2 %, 10 % RECOMMENDATIONS FOR MOUNTING ONTO A HEATSINK Surfaces in contact must be carefully cleaned. The heatsink must have an acceptable flatness: From 0.05 mm to 0.1 mm/100 mm. Roughness of the heatsink must be around 6.3 m. In order to improve thermal conductivity, surfaces in contact (alumina, heatsink) are coated with a silicone grease (type Sl 340 from Rhne-Poulenc or Dow 340 from Dow Corning). The fastening of the resistor to the heatsink is under pressure control of two screws tightened at 4 Nm for full power availability. RPS 500 Tightening Torque on Heatsink 4 Nm The following accessories are supplied with each product: 2 off CHC M4 x 16/16 class 8.8 for heatsink mounting, 2 off TH M4 x 6/6 and 2 M4 contact lock washers for connections. CHOICE OF THE HEATSINK The user must choose according to the working conditions of the component (power, room temperature). Maximum working temperature must not exceed 125 C. The dissipated power is simply calculated by the following ratio: T P = ----------------------------------------------------------------------------------------------------- R ++R R th (j - c) th (c - h) th (h - a) P: Expressed in W T: Difference between maximum working temperature and room temperature R : Thermal resistance value measured between resistive layer and outer side of the resistor. It is the thermal th (j - c) resistance of the component: 0.11 C/W. R : Thermal resistance value measured between outer side of the resistor and upper side of the heatsink. This is the th (c - h) thermal resistance of the interface (grease, thermal pad), and the quality of the fastening device. R : Thermal resistance of the heatsink. th (h - a) Revision: 05-Jun-2019 Document Number: 50047 2 For technical questions, contact: sferfixedresistors vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc 91000